Small-Sized Lithographic Single-Mode Vcsels With High-Power Conversion Efficiency

Keywords

reliability; Semiconductor lasers; VCSEL

Abstract

Small, single mode VCSELs have been pursued almost since the inception of the device, but have been difficult to realize. Here we present data on lithographic and oxide-free VCSELs as small as 2 μm in diameter that produce single transverse mode powers of 8 mW and have high efficiency. The efficiencies reach 46% power conversion with greater than 73 % slope efficiency, with threshold current as low as 300 μA. Smaller VCSELs of 1 μm diameter produce 37 % power conversion efficiency with greater than 79 % slope efficiency, and single mode power over 5 mW. The keys to the high performance are the lithographic control and oxide elimination that reduce the electrical and thermal resistances.

Publication Date

1-1-2015

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

9381

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2079920

Socpus ID

84930079416 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84930079416

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